Can't understand where my code fails

#1

I have checked many times my code on my system but can’t understand where the problem is?

Question is:
https://online.codingblocks.com/app/player/39938/content/57023/5088/code-challenge

And my solution:

#2

@Sparda947 could you tell me how you are handling big numbers since we can’t store them in array.

#3

two arrays are been made namely as prime and res

#4

in res array i am solving for big numbers

#5

@Sparda947 there comes a segmented sieve approach which solves this type of problem.look at this code it works fine, it is using segmented sieve (https://ide.codingblocks.com/s/187733)

#6

Yes I was trying the same way but I was also trying to implement my code such that they can find all the solutions from (1 to 10^10) numbers using prime seive in iteration… It did gave me successfull result in one of the test cases but failed in other… Thanks for your support I will make changes and implement default prime sevie

#7

okay implement it and let me know if you faces any further problems.